BUFFERS By: Luis P. Bazan‚ RPh.‚ Ph.D. A buffer solution is a solution of: 1. A weak acid or a weak base and 2. The salt of the weak acid or weak base Both must be present! A buffer solution has the ability to resist changes in pH upon the addition of small amounts of either acid or base. Consider an equal molar mixture of CH3COOH and CH3COONa CH3COOH (aq) H+ (aq) + CH3COO- (aq) Adding more acid creates a shift left IF enough acetate ions are present 16.3 Which of the following
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Results: For the solutions acid and bases lab the results my group received are as followed. Procedure 5.1 were we had to measure the ph of the following substances Vinegar 4 Apple Juice 4 Black coffee 5 Baking Soda + Sprite 8 0.01mM HCl 4 0.1mM HCl 3 Distilled water 4.5 Tap Water 5 Procedure 5.2 -Test the ability of buffers Before Buffer After Buffer Water 4 Water 4 0.1M phosphate buffer 6.5 0.1M Phosphate buffer 6.9 0.1M NaCl 4 0.1M NaCl 4.8 Procedure 5
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was under siege of a terrorist attack on the ill-fateful eve of 26th December 2008. The rampage that went on for a period of four days claimed as many as 160 lives‚ both Indian and foreigners. The attack exposed India’s vulnerability to terrorism. Taj Mumbai that stayed ablaze for almost two days and three nights now stands symbolic of the tragic events of that day. During the attack on Taj Mumbai‚ a total of 31 people died and about 28 were injured. Post the attack the world became aware of what
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Reacting Acids and Bases Lab Report Introduction Every liquid‚ except for distilled water‚ has either acidic or basic traits. An acid is sour tasting‚ and gives a sharp stinging pain in a cut or wound‚ and bases taste bitter‚ and feel slippery. A pH scale is used to determine what traits a liquid has; acidic or basic. The scale focuses on OH- (hydroxide ions) and H+ (hydrogen ions). The scale goes from 0 to 14. 7 is distilled water‚ as it is directly in the middle; neither acidic or basic. Acids are
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| | |Acid-Base Indicators: Spectroscopic Method of Determination of Ka | |Sahib Kaur | |
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To better understand the attack on Pearl Harbor we must first go to the origin of the problem. Japan had little resources and they depended on trade‚ trade was the only thing keeping them going as a nation. According to Conroy‚ author of Pearl Harbor reexamined: Prologue to the Pacific War‚ “The fundamental causes of the pacific war go back to the turn of the century. International relations were then characterized by politics‚ aggressive nationalism‚ and western colonialism. These forces worked
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Introduction 1.1 Background Information Acids are separated into different categories. These categories are strong acids and weak acids. Hydrochloric and Sulphuric acid are strong acids‚ and Phosphoric acid is a weak acid. When an acid is placed into water‚ it ionises (Tinnesand‚ n.d.). Ionisation occurs when the acid splits up into its two base components. So when Hydrochloric acid is placed into water‚ it splits into a hydrogen ion and a chlorine ion. The amount that an acid ionises depends on its strength
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To detect an acid‚ the scientists use indicators. Litmus is one indicator. An acid turns blue‚ litmus red. Acids are a group of chemicals with very similar properties. An acid is a sour-tasting substance. Lemons taste sour because they contain citric acid. The sour milk contains lactic acid while the sour taste of vinegar is due to acetic acid. Acetic acid‚ which is an ingredient of vinegar‚ releases only a limited number of ions and is not a strong acid. All these are weak acids. This is the reason
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complete their attacks. In my opinion‚ no one specifically is to blame for the attacks‚ but there were certain elements that contributed to the event. 9-11 Errors It has been well known that the U.S. Government likes to keep secrets. One of the most important factors is the government agencies lack of communication with each other. That could have‚ and should have been utilized and maybe 9/11 would have been prevented. A week before the attacks there was a teletype
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The Attack on Pearl Harbor By: Jess Bowen Thesis Statement The attack on Pearl Harbor was an important event not only in World War II‚ but in American history because the attack was the reason the United States entered the war and through their victory in the war‚ made the world as it is today. Outline I. Introduction/ Thesis II. Background to attack A. Anticipation to war 1. Japan vs. China 2. Tensions
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